package org.jeecg.modules.golf.plan.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.jeecg.common.exception.JeecgBootException;
import org.jeecg.common.util.oConvertUtils;
import org.jeecg.modules.golf.plan.entity.PlanType;
import org.jeecg.modules.golf.plan.mapper.PlanTypeMapper;
import org.jeecg.modules.golf.plan.service.IPlanTypeService;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * @Description: 方案分类方案关联
 * @Author: jeecg-boot
 * @Date:   2020-10-20
 * @Version: V1.0
 */
@Service
public class PlanTypeServiceImpl extends ServiceImpl<PlanTypeMapper, PlanType> implements IPlanTypeService {

    @Override
    public void addPlanType(PlanType planType) {
        if(oConvertUtils.isEmpty(planType.getParentId())){
            planType.setParentId(IPlanTypeService.ROOT_PID_VALUE);
        }else{
            //如果当前节点父ID不为空 则设置父节点的hasChildren 为1
            PlanType parent = baseMapper.selectById(planType.getParentId());
            if(parent!=null && !"1".equals(parent.getHasChild())){
                parent.setHasChild("1");
                baseMapper.updateById(parent);
            }
        }
        baseMapper.insert(planType);
    }

    @Override
    public void updatePlanType(PlanType planType) {
        PlanType entity = this.getById(planType.getId());
        if(entity==null) {
            throw new JeecgBootException("未找到对应实体");
        }
        String old_pid = entity.getParentId();
        String new_pid = planType.getParentId();
        if(!old_pid.equals(new_pid)) {
            updateOldParentNode(old_pid);
            if(oConvertUtils.isEmpty(new_pid)){
                planType.setParentId(IPlanTypeService.ROOT_PID_VALUE);
            }
            if(!IPlanTypeService.ROOT_PID_VALUE.equals(planType.getParentId())) {
                baseMapper.updateTreeNodeStatus(planType.getParentId(), IPlanTypeService.HASCHILD);
            }
        }
        baseMapper.updateById(planType);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void deletePlanType(String id) throws JeecgBootException {
        //查询选中节点下所有子节点一并删除
        id = this.queryTreeChildIds(id);
        if(id.indexOf(",")>0) {
            StringBuffer sb = new StringBuffer();
            String[] idArr = id.split(",");
            for (String idVal : idArr) {
                if(idVal != null){
                    PlanType planType = this.getById(idVal);
                    String pidVal = planType.getParentId();
                    //查询此节点上一级是否还有其他子节点
                    List<PlanType> dataList = baseMapper.selectList(new QueryWrapper<PlanType>().eq("parent_id", pidVal).notIn("id", Arrays.asList(idArr)));
                    if((dataList == null || dataList.size()==0) && !Arrays.asList(idArr).contains(pidVal)
                            && !sb.toString().contains(pidVal)){
                        //如果当前节点原本有子节点 现在木有了，更新状态
                        sb.append(pidVal).append(",");
                    }
                }
            }
            //批量删除节点
            baseMapper.deleteBatchIds(Arrays.asList(idArr));
            //修改已无子节点的标识
            String[] pidArr = sb.toString().split(",");
            for(String pid : pidArr){
                this.updateOldParentNode(pid);
            }
        }else{
            PlanType planType = this.getById(id);
            if(planType==null) {
                throw new JeecgBootException("未找到对应实体");
            }
            updateOldParentNode(planType.getParentId());
            baseMapper.deleteById(id);
        }
    }

    @Override
    public List<PlanType> queryTreeListNoPage(QueryWrapper<PlanType> queryWrapper) {
        List<PlanType> dataList = baseMapper.selectList(queryWrapper);
        List<PlanType> mapList = new ArrayList<>();
        for(PlanType data : dataList){
            String pidVal = data.getParentId();
            //递归查询子节点的根节点
            if(pidVal != null && !"0".equals(pidVal)){
                PlanType rootVal = this.getTreeRoot(pidVal);
                if(rootVal != null && !mapList.contains(rootVal)){
                    mapList.add(rootVal);
                }
            }else{
                if(!mapList.contains(data)){
                    mapList.add(data);
                }
            }
        }
        return mapList;
    }

    /**
     * 根据所传pid查询旧的父级节点的子节点并修改相应状态值
     * @param pid
     */
    private void updateOldParentNode(String pid) {
        if(!IPlanTypeService.ROOT_PID_VALUE.equals(pid)) {
            Integer count = baseMapper.selectCount(new QueryWrapper<PlanType>().eq("parent_id", pid));
            if(count==null || count<=1) {
                baseMapper.updateTreeNodeStatus(pid, IPlanTypeService.NOCHILD);
            }
        }
    }

    /**
     * 递归查询节点的根节点
     * @param pidVal
     * @return
     */
    private PlanType getTreeRoot(String pidVal){
        PlanType data =  baseMapper.selectById(pidVal);
        if(data != null && !"0".equals(data.getParentId())){
            return this.getTreeRoot(data.getParentId());
        }else{
            return data;
        }
    }

    /**
     * 根据id查询所有子节点id
     * @param ids
     * @return
     */
    private String queryTreeChildIds(String ids) {
        //获取id数组
        String[] idArr = ids.split(",");
        StringBuffer sb = new StringBuffer();
        for (String pidVal : idArr) {
            if(pidVal != null){
                if(!sb.toString().contains(pidVal)){
                    if(sb.toString().length() > 0){
                        sb.append(",");
                    }
                    sb.append(pidVal);
                    this.getTreeChildIds(pidVal,sb);
                }
            }
        }
        return sb.toString();
    }

    /**
     * 递归查询所有子节点
     * @param pidVal
     * @param sb
     * @return
     */
    private StringBuffer getTreeChildIds(String pidVal,StringBuffer sb){
        List<PlanType> dataList = baseMapper.selectList(new QueryWrapper<PlanType>().eq("parent_id", pidVal));
        if(dataList != null && dataList.size()>0){
            for(PlanType tree : dataList) {
                if(!sb.toString().contains(tree.getId().toString())){
                    sb.append(",").append(tree.getId());
                }
                this.getTreeChildIds(tree.getId().toString(),sb);
            }
        }
        return sb;
    }
}
